The most revolutionary weapon ever to be seen in a game. Can be used for prying headcrabs off of zombies, breaking off Combine heads, cracking open boxes and 2x4's, and trying to kill G-Man. First acquired weapon in Half-Life 1 and 2. Not to be underestimated, especially in the hands of an expert such as Gordon Freeman.

(Talking about crowbar)
Barney:"Oh yeah, and I think you dropped this back at Black Mesa... Good luck!"
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Gordon Freeman, thinking to himself:
I'ma bust some Xen sh** up in here wif my 22... inch crowbar.